vstart_runner: be python3 compatible

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/qa/tasks/vstart_runner.py b/qa/tasks/vstart_runner.py
index 965ad9717f6e3d72b37d40faa71cd4a0125c3b92..318a9506de95cb8468696bcdecd3dc2b85fe84b0 100644 (file)
--- a/qa/tasks/vstart_runner.py
+++ b/qa/tasks/vstart_runner.py
@@ -30,7 +30,7 @@ Alternative usage:
 
 """
 
-from StringIO import StringIO
+from six import StringIO
 from collections import defaultdict
 import getpass
 import signal